Malegra 200 mg is a little higher dosage compared to 100 mg tablet and shows its effect immediately. Sildenafil being the key ingredient of the tablet is effective in treating erectile dysfunction or impotence in men. Make sure you are not overdosing on the medicine as it is already a high dose and overdosing can prove to be life-threatening. Take medicine with a normal glass of water and not with any beverage or alcohol.